<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
</head>
<body>
  <form action="/login" method="post">
    登录名: <input type="text" name="username"/><br/>
    密码: <input type="text" name="password"/><br/>
    登陆:<input type="submit">
  </form>
</body>
</html>